Nonlinear resistance modeling using MATLAB and simulink in estimation of city street lighting harmonic activity

Abstract

In recent years an increasing power harmonic distortion is measured in electrical power systems. One of the main harmonic sources is a ballasted lighting fixture. Especially, mercury and sodium type luminaires apply harmonic distortions to their power supply systems. In this study, a MATLAB (R) code and a Simulink simulation are developed for nonlinear resistance modeling of mercury types luminaires for a main street lighting system in Istanbul and the harmonies created by the street lighting fixtures are studied with respect to supply transformers, operation conditions and regional characteristics.